Comment by DoingIsLearning

Very useful info but that reads like Apple's "you're using it wrong" press releases.

In my experience Natural Language queries return very poor results except when you are doing a largely popular search.

It is also far more verbose to write: "What is the frequency of the ultrasonic driver in phacoemulsification?"

Instead of: "Phacoemulsification+resonant"

The second query is shorter and gives me a correct answer in ddg whereas google returns irrelevant results mixed in with a long lists of patents.